Process of making mixed fibers and nonwoven fabrics

Details Process of making mixed fibers and nonwoven fabrics Process of making mixed fibers and nonwoven fabrics

2011-07-19

2011-07-19

Tentoni, Leo B (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

C264S147000, C264S171100, C264S172110, C264S172130, C264S172140, C264S211160

Reexamination Certificate

active

07981336

ABSTRACT:
The subject matter disclosed herein relates generally to the production of a predetermined ratio of multicomponent fibers in combination with monocomponent fibers or other multicomponent fibers, preferably through a spunbonding process. After extrusion, these fibers can produce a fiber network that is subsequently bonded to produce a nonwoven fabric comprising multiple types of fibers. The multicomponent fibers within the network may be processed to remove one component by dissolution or to split the individual components into separate fibers. As a result, the fabric will be comprised of fibers with a range of diameters (micro- or nano-denier fibers as well as higher denier fibers) such that the fibers will not pack as tightly as in a homogeneous nonwoven fabric produced from one type of monocomponent or multicomponent fiber. The present invention additionally relates to methods for producing nonwoven fabrics with increased loft, breathability, strength, compressive properties, and filtration efficiency.

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